Can Air Conditioners Power Jetpacks?

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Air conditioners could theoretically be used to create a vortex for jetpack propulsion by cooling air and expelling it to generate lift. This concept draws parallels to tornadoes, which utilize a mix of cold and warm air to create powerful vortices. However, there is skepticism about the efficiency of this method, as creating a vortex may waste energy in rotational movement rather than vertical lift. Directly shooting exhaust downward is suggested as a more efficient alternative for propulsion. Overall, while the idea is innovative, its practicality and efficiency compared to traditional jetpack designs remain questionable.
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I saw a working jetpack shown on a tv show on the science channel and it got me thinking how exactly we can make the perfect jetpack. I came up with an idea. AIR CONDITIONERS! Bear with me, just as how a tornado is a vortex of cold and warm winds and can have all that speed and strength, we can make our own vortex using air conditioner-like power sources, cooling the air and then coming out of a hole making a vortex, like smoke makes a vortex when hit out of a drum.
 
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How's this vortex going to push you up?
 
The vortex will be shooting down first pushing you off the ground, then colliding with air molecules to keep you rising.
 
I'm not sure, but I think just shooting exhaust straight down is more efficient than trying to make a vortex. You're using up a lot of energy to make this vortex only to have most of its energy be in the direction of rotation and not pushing you anywhere.
 
That makes more sense.
 
So I know that electrons are fundamental, there's no 'material' that makes them up, it's like talking about a colour itself rather than a car or a flower. Now protons and neutrons and quarks and whatever other stuff is there fundamentally, I want someone to kind of teach me these, I have a lot of questions that books might not give the answer in the way I understand. Thanks

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